Question

SoRry But I Have An a PrOblem To start WIththis....

A boy is at a distance d = 6m from the base of a building
attemptsto throw a ball through a window size that H = 90cm at a
height h =8m.
if the ball's initial speed is v0 = 15m / s,
determine the range of initial angles θ0 allowing the ballpasses
through the window. (acceleration of the ball is 9.81 m / s^2
vertical down)